Temperature regulator for internal-combustion engines



L. C. GALLI. TEMPERATURE REGULATOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED 0T. 22, I917.

1 409 9 Patented Mar. 14, 1922,.

Fig. 1.

JJJJJAI 4; Inventor; Gal,

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' away, ofthe form of this invention chosenumrao STATES PATENT OFFlCE.

LOUIS C. GAL-LI, OF NEW YORK, N. Y.

TEMPERATURE REGULATOR ron mrnanar-connosrron Enemies.

Specification of Letters Patent.

Patented Mar. 14;, 1922.

Application filed October 22, 1917. Serial No. 197,991.

5- hattan, county and State of New York, have Iinvented certain new and; useful Improvements in Temperature'Regulators for InternaLCombustion Engines, of which the following is a specification.

This invention relates to means, herein illustrated as shutters, for regulating the temperature of internal combustion engines, and means for automatically actuating the same. i

It is an improvement on the invention of my application Serial No. 156,359 filed March 21, 1917 wherein the power for operating" the shutters is specifically illustrated as derived from the oil-circulating means.

In this invention the power for operating \the shutters is derived from the partial vacuum on the intake side of the engine, and the object of this invention is the provision of 'means such as above indicated Which shall be soactuated that the shutters or other means will remain closed at all times while the engine is not running; and

also while the engine is running until the desired temperature within 'the hood 15 reachedwhen the shutters or other means are automatically opened and remain open for all temperatures thereabove but close automatically when the temperature drops below that .point. "It" will, of course, be understood' that,

while a vacuum isstatedas the -mean's'of operation, the power actually comes from the pressure of the atmosphere. However, without the vacuum, atmospheric pressure 40, would manifestly he inoperative, and therefore inthis sense the vacuumkma-y 'be regarded as thepperatmg means.

. In theaccompanying sheet ofdrawings which forms a part of -this application.-

Figure 1 is a side elevation, partly broken for illustrative purposes, with an'automobile radiator and engineconventionally shown; and

Fig. 2 is a partial vertical section of certain'or' the operative parts of Fig.1.

The shutters 4 4 herein illustrated, are arranged in a bank for simultaneous operation, andare so constructed that when Mclosed-they'com letely cover the front of the radiator 5 hey are suitably mounted in proxlmity to the radiator, each shutter being preferablypivotally mounted 2110110 ts central longitudinal line, suitable mount mg such as a frame 6 being provided where necessary.

- The connecting of the shutters is accomplished by a 'bar 7 which has horizontally pro ect ng ears 8 8, with which oppositely pro ectmg ears 9 9 in the rear upper art of each shutter are hinge connected. T ese parts are consequently hidden from ,view

when the shutters are closed, as is illustrated in F1g.- 2,

On the interior of the radiator, and in a convenient place is suitably mounted an actuating device or motor here illustrated as comprising a chamber 10 backed with a diaphragm of flexible material 11. To the diaphragmis. attached a rod l2 which extends through the radiator and issuitably connected with the shutters. The connection illustrated comprises a link 13 pivotally connected with an angle arm 14 which is rigidly connected vwith one of the shutters. The diaphragm is illustrated as being extended by a spring '15 in a direction to close the shutters.

The chamber-is connectedwith the intake of the engine, ashy a small tube 16 which connects with the inlet pipe 17 between the carburetor 18 and the engine. When the engine is running there is a drop of pressure or. partial vacuum in the inlet pipe and by reason of the connection of the chamber A normally open leak into the chamber is provided through the block 19 as by a central hole 21 and two branch holes 22 22, the branch holes being provided because one end of the central hole as here illustrated is closed by the rod. A lyoke is clamped between the block and its nut and 1s supported therefrom. It comprises a bent strap 23 and a perforated flanged disk 29, to the flange of which the ends of'the strap are attached. The yoke supports a thermostat As here shownthe rod and the 10 through the small tube there willb'e subshown as consisting of two hollow disks 24 24 the first of which is adjustably supported on a screw 25, which extends through the perforated disk, and the second of which is supported from the first. The second disk carries a needle 26 which enters the central leak hole, thereby forming-a'needle valve which is closed when the hollow disks are distended by the heat. Through the adjusting screw the thermostat can be set to close the leak at any desired temperature of the engine chamber and then locked by a nut 27. A perforated guard 28, suitably attached to the chamber, is provided to protect the thermostat from mechanical injury, and may also serve as a guiding support for the yoke. The perforations in the guard and in the disk-cap of the yoke permit circulation of air from the engine chamber.

The operation is as follows: When the engine 'is set at rest or the a1r in the engine chamber is below the temperature at which the shutters are to be open, the flexible diaphragm is pushed back by the spring 15, the connecting rod 12 is retracted, and the shutters are drawn together .as shown in Fig. 1'. On starting the engine a drop in pressure below atmospheric will be created in theintake pipe and maintained while the engine continues to run, and air will be drawn from the chamber of the m0- tor. However, until there is a rise in temperature, there will be no material drop in pressure in the chamber owing to the leak through the needle valve, and the motor will not operateto open the shutters. But when the temperature is reached for which the apparatus is adjusted the needle-valve closes cutting off the leak, and the pressure in the chamber drops to substantially the vacuum of the intake pipe of the engine. The diaphragm is then pressedforward by the atmospheric pressure on the outer side, mov ing the connecting rod forwardly and opening the shutters. Upon the stoppage of the engine the vacuum inthe motor chamber is immediately broken through the tube 16,

/ thereby balancing pressures on the two sides of the diaphragm and permitting the spring 15 to draw the shutters together, regardless of whether or not the temperature has fallen sufliciently to open the needle-valve. The air which finds its way, in the construction illustrated, into the intake pipe of the engine through the shutter-operating motor is inconsequential in its influence on the proportions of the mixture supplied to the en me.

he drawings hereinindicate one form of the invention onl in order that the invention may be rea ily comprehended, but it IS to'be understood that the invention is by no means confined to the specific form herein illustrated; and the foregoing detaileddescription has been given for -clearness of understanding and no undue limitation should be deduced therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

What I claim as new and desire to secure by Letters Patents of the United States is:

1. In a capacity regulating means for the cooling system of an internal combustion engine the combination of a shield, a motor for operating the shield comprising a fixed member and a movable member, means for controlling the motor dependent :in their operation upon a difference of air pressures, and means carried in fixed relation with the movable member of the motor for determining said difference of air pressures.

2. In a capacity regulating means for the cooling system of an internal combustion engine, the combination of-a shield, a motor for operating the shield comprising a fixed member and a movable member, means for with the movable member of.the motor for determining said difi'erence of air pressures, and means independent of the thermostatic means for nullifying the effect of the thermostatic means.

4. The combination of an internal combustion engine, a cooling system therefor. means for varying the capacity of the cooling system, a chamber connected with the intake of the engine, a flexible diaphragm closing the mouth of the chamber and connected. with the capacity varying means so as to increase the cooling capacity when drawn into the chamber by a vacuum therein, a leak through the diaphragm for preventing the formation of a vacuum in the chamber, a thermostat mounted on the diaphragm, and means operated by the thermostat for closing the leak, substantially as described.

5. The combination of an internal comdrawn into the chamber by a vacuum. therein, a valve for preventing the formation of a vacuum in the chamber, and a thermostat carried in fixed relation with the diaphragm for actuating the valve.

6. The combination ofan internal combustion engine, a cooling system therefor in:

cluding a radiator, means for controlling thecooling capacity of the radiator, actuating means embodying a movable member directly responsive to suction produced in the engine cylinders for operating the concooling system of an internal combustion engine comprising a motor embracing a fixed member and a movable member, means for controlling the motor dependent in its operation upon a difference in fluid pressures on opposite sides of the movable memher, one of the pressures being produced by the engine and thermostatically controlled means carried in fixed relation with the movable member for determining said difierence of pressures Signed at New Yorli; N. Y. this 18th of October, 1917,.

LOUIS C. GALLI. lVitnesses:

S. STEVEN, RUTH MAOPHAILU day 7 

